When you have completed the above exercises show them to your
tutor for this week's core mark.

Ex 2:

Add a new use case to the address book application: as an additional
option, the user can edit an exisiting address. The address can be
selected in the same way as in the 'delete' use case. The user should
not have to enter those data fields again which won't be changed.

Start by designing the dialogue. Which modules have to be changed,
which functions added? Then, implement the necessary changes.

When you have completed the above exercise show it to your
tutor for this week's advanced mark.